Tables cont'd: 



No. Page 



5 Analysis of variance of effects of potential, pulse 

 frequency, and pulse duration on movement of once- 

 shocked squawfish 11 



6 Analysis of variance of tests of unshocked and once- 

 shocked squawfish combined 13 



FIGURES 



1 Laboratory experimental area with staggered electrode 



array 4 



2 Staggered electrode array used in laboratory 5 



3 Block diagram of electrical equipment 6 



4 Length frequency distribution of squawfish 6 



5 Difference in percentage of squawfish that entered the 

 "positive" end zone against the difference in water 

 temperature between times a combination was run 12 



6 Diagram of potential contours for sequentially pulsed 



field 12 



7 Comparison between blocks of the percentage of squawfish 



that entered the "positive" end zone 13 



8 Mean percentage of squawfish that entered the "positive" 

 end zone in north and south blocks for each value of 

 the variable factors of potential, pulse frequency, and 

 pulse duration, unshocked and once-shocked fish com- 

 bined 14 



IV 



